<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>初识css</title>
    <style>
        p {
            color: red;font-size: 30px;
        }
    </style>
</head>
<body>
    <p>p标签 用css改变颜色 </p>
    <!--外部样式表  -->
    <p>这是p标签</p>
    <link rel="stylesheet" href="./my.css">

    <div style="color: blue;font-size: 36px;">这是div标签</div>
</body>
</html>